CN107474768B - 一种太阳能薄膜电池组件边缘密封胶 - Google Patents
一种太阳能薄膜电池组件边缘密封胶 Download PDFInfo
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- CN107474768B CN107474768B CN201710562425.5A CN201710562425A CN107474768B CN 107474768 B CN107474768 B CN 107474768B CN 201710562425 A CN201710562425 A CN 201710562425A CN 107474768 B CN107474768 B CN 107474768B
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- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
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- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 2
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- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 2
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- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
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- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 description 2
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- 238000005411 Van der Waals force Methods 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
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- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
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- H01L31/042—PV modules or arrays of single PV cells
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- H01L31/052—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
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Abstract
本发明公开了一种太阳能薄膜电池组件边缘密封胶。本发明通过将丁基聚合物、低膨胀系数填料、硅烷改性烯烃聚合物及其它功能助剂经共混捏合成团、抽真空捏合制得低膨胀系数、高体积电阻率、低水汽透过率、优良导热性和耐湿热的太阳能薄膜电池组件边缘密封胶。通过添加低膨胀系数填料,可以降低密封胶的热膨胀率,同时可以提高密封胶的绝缘性、导热性和耐热性能,解决薄膜电池组件在使用过程中边缘密封胶形变过大、漏电和过热分解的问题;同时添加硅烷改性烯烃聚合物可以有效防止薄膜电池组件受受湿热水汽侵蚀导致的边缘密封胶脱层,解决水汽侵入电池问题;密封胶应用于密封薄膜电池组件湿热老化测试所获得的输出功率劣化有明显的降低。
Description
技术领域
本发明涉及一种光伏组件密封胶,用于薄膜电池光伏组件的边缘密封,具有低膨胀率、高绝缘性、高水汽阻隔性、良好散热性及耐湿热稳定性,应用于密封薄膜电池光伏组件的输出功率劣化降低,提高了太阳能的利用效率。
背景技术
太阳能薄膜电池主要有非晶硅、铜铟镓硒(CIGS)、碲化镉(CdTe)、钙钛矿和燃料敏化等太阳能薄膜电池,薄膜电池因其工作原理而对水汽极为敏感,因此薄膜电池需要优异的阻水密封材料。目前薄膜电池光伏组件的封装由边缘丁基密封胶和内部透明PO胶膜组成,因PO胶膜材料特性所限,其水汽阻隔及耐老化性能远不如丁基密封材料,因此优异水汽阻隔性能的丁基密封胶对保证薄膜电池光伏组件长久有效工作起到至关重要的作用。
边缘丁基密封胶其主体基材是聚合物材料,属于分子晶体类化合物,分子间由范德华作用力联系,温度升高时,聚合物材料中的分子因弱的范德华力和温度影响而在其平衡位置的振幅变大,因此存在着热膨胀较大的缺点,该缺点可能导致密封胶脱层,更严重将导致玻璃的破裂,从而水汽将会侵入电池内部,最终会导致薄膜电池组件发电效率降低,而通过添加由共价键相互作用的原子晶体化合物如氮化硼、碳化硅等材料,因其材料中原子相互作用为极强的共价键作用而具有较低的热膨胀系数,因此在丁基密封材料中添加原子晶体化合物填料将降低材料的热膨胀系数;薄膜电池组件是在阳光直射甚至高温环境下工作,密封胶散热性能较差往往会导致密封胶降解而引起小分子化合物向组件内部迁移或脱层等问题;为了提高边缘密封胶的耐紫外、耐热和机械补强性能,丁基密封胶必不可少需要添加较高比例的炭黑,这将导致光伏组件边缘密封胶绝缘性能较差,更严重将发生漏电问题,如中国专利CN105062379A中发明的光伏组件密封胶,其只有1010Ω·cm的体积电阻率,难以保证光伏组件在发电过程中不发生漏电导电的危险;薄膜等封装材料的热传导系数与介电常数呈反比,通过降低封装材料的介电常数可减少光伏组件电路的漏电电流,添加像氮化硼、碳化硅等同时具有低膨胀系数和高热传导系数的原子晶体化合物填料不仅可以降低密封胶的热膨胀系数,而且还能同时提高密封胶的导热性能和绝缘性能,解决过热分解和漏电问题;为防止水汽从密封材料与基材之间的界面侵入电池组件,现有技术的密封胶往往含有硅烷改性组分,该组分在水汽作用下发生水解能与玻璃界面起化学粘接作用,而中国专利CN101735745B中发明的光伏组件密封胶,其不含硅烷改性聚合物组分,仅依靠密封胶与玻璃的物理粘接作用不能保证密封胶长久有效地阻隔水汽。
本发明为改善上述问题,开发了一种低膨胀系数、高体积电阻率、低水汽透过率、优良散热性和耐湿热的太阳能薄膜电池组件边缘密封胶。
发明内容
本发明的目的是针对现有技术不足,提供一种太阳能薄膜电池组件边缘密封胶。
本发明的目的是通过以下技术方案实现:一种太阳能薄膜电池组件边缘密封胶,它包含1~15wt%低膨胀系数填料、30~50wt%补强填料、15~45wt%烯烃聚合物、5~25wt%改性烯烃聚合物、5~20wt%干燥剂、1~5wt%增粘树脂和0.1~0.5wt%防老剂。将低膨胀系数填料和补强填料加入到温度为100~130℃的捏合机中共混捏合30分钟后,再加入烯烃聚合物、改性烯烃聚合物、干燥剂、增粘树脂和防老剂,在120~150℃下捏合成团,在真空度为0.08~0.098MPa下继续捏合1~2小时,制得密封胶。
进一步地,所述的低膨胀系数填料为原子晶体化合物,优选氮化硼、氮化硅、碳化硅、氮化铝、氧化锆、α-氧化铝,目数50-1000目。
进一步地,所述烯烃聚合物含有如下线性结构单元聚合物结构可以是均聚结构、无规共聚结构或嵌段结构,聚合单体可以是丁烯、苯乙烯、异戊二烯、丁二烯、异丁烯、环戊二烯的至少一种,聚合物数均分子量为5000~800000,优选10000~500000。
进一步地,所述的改性烯烃聚合物端基或侧链基含有以下结构:-SiRnX3-n,其中R为CmH2m+1结构,X为烷氧基,酰氧基,氨基,酰胺基,酮肟基,氨氧基,烯氧基官能团,n为0,1或2,m为1~20的整数。
进一步地,所述X优选为甲氧基或乙氧基,n优选为2,m优选为1~6。
进一步地,所述补强填料由白艳华、云母、滑石粉、高岭土、白炭黑、炭黑的一种或多种按任意配比混合组成,目数大于100目。
进一步地,所述干燥剂选自A型、X型、Y型分子筛,目数大于50目,优选3A型分子筛。
进一步地,所述增粘树脂由松香树脂、萜烯树脂、酚醛树脂、碳五加氢树脂、碳九加氢树脂的一种或多种按任意配比混合组成。
进一步地,所述增粘树脂优选为碳五加氢树脂。
进一步地,所述防老剂由芳香胺类、受阻酚类、水杨酸酯类、苯酮类、三嗪类、HALS(受阻胺光稳定剂)的一种或多种按任意配比混合组成。
本发明的有益效果有:通过添加低膨胀系数填料,可以降低密封胶的热膨胀率,同时可以提高密封胶的绝缘性、导热性和耐热性能,解决薄膜电池组件在使用过程中边缘密封胶形变过大、漏电和过热分解等问题;同时添加硅烷改性烯烃聚合物可以有效防止薄膜电池组件受湿热水汽侵蚀导致的边缘密封胶脱层,解决水汽侵入电池问题;密封胶应用于密封薄膜电池组件湿热老化测试所获得的输出功率劣化有明显的降低。
具体实施方式
下面通过具体实施例对本发明进行描述,有必要在此指出的是以下实施例只用于对本发明进行进一步说明,不能理解为对本发明保护范围的限制,该领域的技术熟练人员可以根据上述发明的内容作一些非关键的改进和调整。
实施例1:
将1%氮化硼(山东佰仟化工有限公司)、10%炭黑(美国卡博特公司)和40%白艳华(常州乐环商贸有限公司)加入到温度为100~130℃的捏合机中进行共混捏合30分钟,再加入15%IIR(美国埃森克美孚公司)、25%POLYVEST-HT(德国赢创公司)、5%3A分子筛(上海久宙化学品有限公司)、3.8%碳五加氢石油树脂(上海多康实业有限公司)、0.1%抗氧剂168(山东佰仟化工有限公司)、0.1%UV-234(山东佰仟化工有限公司)在120~150℃下捏合成团,在真空度为0.08~0.098MPa下继续捏合1~2小时,得到均匀密封胶捏合物。
实施例2:
将10%氮化硅(山东佰仟化工有限公司)、20%炭黑(美国卡博特公司)和20%云母(常州乐环商贸有限公司)加入到温度为100~130℃的捏合机中进行共混捏合30分钟,再加入20%IIR(美国埃森克美孚公司)、10%PB(德国赢创公司)、10%POLYVEST-HT(德国赢创公司)、8.9%4A分子筛(上海久宙化学品有限公司)、1%萜烯树脂(上海多康实业有限公司)、0.1%抗氧剂1076(山东佰仟化工有限公司)在120~150℃下捏合成团,在真空度为0.08~0.098MPa下继续捏合1~2小时,得到均匀密封胶捏合物。
实施例3:
将5%碳化硅(山东佰仟化工有限公司)、10%炭黑(美国卡博特公司)和17.5%滑石粉(常州乐环商贸有限公司)加入到温度为100~130℃的捏合机中进行共混捏合30分钟,再加入45%IIR(美国埃森克美孚公司)、5%EPION EP103S(日本钟渊化学)、12.2%5A分子筛(上海久宙化学品有限公司)、5%碳九加氢石油树脂(上海多康实业有限公司)、0.2%抗氧剂1010(山东佰仟化工有限公司)、0.1%UV-328(山东佰仟化工有限公司)在120~150℃下捏合成团,在真空度为0.08~0.098MPa下继续捏合1~2小时,得到均匀密封胶捏合物。
实施例4:
将15%氮化铝(济南英出化工科技有限公司)、15%炭黑(美国卡博特公司)和13%高岭土(常州乐环商贸有限公司)加入到温度为100~130℃的捏合机中进行共混捏合30分钟,再加入25%PIB(德国巴斯夫公司)、10%VESTOPLAST-206(美国埃森克美孚公司)、20%13X分子筛(上海久宙化学品有限公司)、1.5%酚醛树脂(上海多康实业有限公司)、0.2%抗氧剂BHT(山东佰仟化工有限公司)、0.1%UV-9(山东佰仟化工有限公司)在120~150℃下捏合成团,在真空度为0.08~0.098MPa下继续捏合1~2小时,得到均匀密封胶捏合物。
对比例A:
将10%炭黑(美国卡博特公司)和40%白艳华(常州乐环商贸有限公司)加入到温度为100~130℃的捏合机中进行共混捏合30分钟,再加入15%PIB(德国巴斯夫公司)、25%POLYVEST-130(德国赢创公司)、5%3A分子筛(上海久宙化学品有限公司)、4.8%碳五加氢石油树脂(上海多康实业有限公司)、0.1%抗氧剂168(山东佰仟化工有限公司)、0.1%UV-234(山东佰仟化工有限公司)在120~150℃下捏合成团,在真空度为0.08~0.098MPa下继续捏合1~2小时,得到均匀密封胶捏合物。
对比例B:
将20%炭黑(美国卡博特公司)和35%云母(常州乐环商贸有限公司)加入到温度为100~130℃的捏合机中进行共混捏合30分钟,再加入20%IIR(美国埃森克美孚公司)、10%PIB(德国巴斯夫公司)、10%POLYVEST-130(德国赢创公司)、8.9%4A分子筛(上海久宙化学品有限公司)、1%萜烯树脂(上海多康实业有限公司)、0.1%抗氧剂1076(山东佰仟化工有限公司)在120~150℃下捏合成团,在真空度为0.08~0.098MPa下继续捏合1~2小时,得到均匀密封胶捏合物。
测试评定方法:
a.热膨胀系数:样品厚度1mm,根据ISO 11359-2-1999进行测试。
b.体积电阻率:样品厚度1mm,根据GB/T 1410-2006进行测试。
c.湿热实验:按IEC 61215-2005的规定,在85℃±2℃,湿度(85±5)%RH的温湿度箱中进行加速老化。
d.水汽透过率:样品厚度1mm,根据GB/T 21529-2008进行测试。
e.搭接剪切强度:使用玻璃搭接件,根据GB/T 7124-2008进行测试。
f.导热率:样品厚度1mm,根据ASTM D5470进行测试。
g.湿热老化输出功率劣化:实施例和对比例搭配陶氏公司PO封装胶膜制作薄膜电池双玻组件,根据GB/T 18911-2002进行测试。
实施例1~4和对比例A、B样品经上述测试方法进行评价,其评价结果如下表所示。
本发明制得的边缘密封胶具有低膨胀率、高绝缘性、高水汽阻隔性、良好散热性和耐湿热稳定性等优点,能解决薄膜电池双玻组件边缘密封胶脱层、漏电、过热分解及水汽侵蚀严重等问题,适用于光伏组件的边缘密封,特别适用于对水汽敏感的薄膜电池组件的边缘密封。
Claims (9)
1.一种太阳能薄膜电池组件边缘密封胶,其特征在于,它包含1~15wt%低膨胀系数填料、30~50wt%补强填料、15~45wt%烯烃聚合物、5~25wt%改性烯烃聚合物、5~20wt%干燥剂、1~5wt%增粘树脂和0.1~0.5wt%防老剂;将低膨胀系数填料和补强填料加入到温度为100~130℃的捏合机中共混捏合30分钟后,再加入烯烃聚合物、改性烯烃聚合物、干燥剂、增粘树脂和防老剂,在120~150℃下捏合成团,在真空度为0.08~0.098MPa下继续捏合1~2小时,制得密封胶;所述的低膨胀系数填料为原子晶体化合物,选自氮化硼、氮化硅、碳化硅、氮化铝、氧化锆、α-氧化铝,目数50-1000目;所述烯烃聚合物含有如下线性结构单元聚合物结构是均聚结构、无规共聚结构或嵌段结构,聚合单体是异丁烯以及任选丁烯、苯乙烯、异戊二烯、丁二烯、环戊二烯中的一种,聚合物数均分子量为5000~800000;
所述的改性烯烃聚合物端基或侧链基含有以下结构:-SiRnX3-n,其中R为CmH2m+1结构,X为烷氧基,酰氧基,氨基,酰胺基,酮肟基,氨氧基,烯氧基官能团,n为0,1或2,m为1~20的整数。
2.根据权利要求1所述的太阳能薄膜电池组件边缘密封胶,其特征在于,所述烯烃聚合物的数均分子量为10000~500000。
3.根据权利要求1所述的太阳能薄膜电池组件边缘密封胶,其特征在于,所述X选自为甲氧基或乙氧基,n为2,m为1~6。
4.根据权利要求1所述的太阳能薄膜电池组件边缘密封胶,其特征在于,所述补强填料由白艳华、云母、滑石粉、高岭土、白炭黑、炭黑的一种或多种按任意配比混合组成,目数大于100目。
5.根据权利要求1所述的太阳能薄膜电池组件边缘密封胶,其特征在于,所述干燥剂选自A型、X型、Y型分子筛,目数大于50目。
6.根据权利要求5所述的太阳能薄膜电池组件边缘密封胶,其特征在于,所述干燥剂为3A型分子筛。
7.按照权利要求1所述的太阳能薄膜电池组件边缘密封胶,其特征在于,所述增粘树脂由松香树脂、萜烯树脂、酚醛树脂、碳五加氢树脂、碳九加氢树脂的一种或多种按任意配比混合组成。
8.根据权利要7所述的太阳能薄膜电池组件边缘密封胶,其特征在于,所述增粘树脂为碳五加氢树脂。
9.根据权利要求1所述的太阳能薄膜电池组件边缘密封胶,其特征在于,所述防老剂由芳香胺类防老剂、受阻酚类防老剂、水杨酸酯类防老剂、苯酮类防老剂、三嗪类防老剂、受阻胺光稳定剂的一种或多种按任意配比混合组成。
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KR101792311B1 (ko) * | 2014-09-02 | 2017-10-31 | 주식회사 엘지화학 | 수분 포집 기능이 있는 봉지재용 조성물 및 태양전지용 봉지재 |
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